Convertible shelving and table



HYUNOK. CONVERTIBLE SHELVING AND TABLE.

(No Model.)

- Patented Nov. 16, 1897, 70

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UNITE STATES PATENT FFIQE.

FREDERICK YUNCK, OF BRYAN, OHIO.

CONVERTIBLE SHELVING AND TABLE.

SPECIFICATION forming part of Letters Patent No. 593,916, dated November16, 1897. Application filed. Tune 21, 1897. Serial No. 641,643. (Nomodel.)

To a whom it may concern.-

Be it known that I, FREDERICK YUNOK, a citizen of the United States,residing at Bryan,

, in the county of Williams and State of Ohio,

have invented certain new and useful Improvements in ConvertibleShelving and Tables, of which the following is a specification.

My invention relates to convertible shelving and tables, and has for itsobject to provide certain improvements in the construction disclosed inan application for Letters Patent filed by me January 11, 1897, SerialNo. 618,7l6, said improvements consisting, first, in novel means forconnecting the adjusting mechanism to the fixed shelf, and, secondly, innovel means for connecting the fixed shelf to the supporting-uprights.

In the accompanying drawings, Figure 1 is a side elevation of myimproved device. Fig. 2 is a top plan view of the same. Fig. 3 is abottom plan view of the fixed shelf, shown Fig.4 is. a side elevation ofthe same detached, and Fig. 5 is a vertical longitudinal sectional viewof a portion of said shelf.

In the said drawings the reference-numeral 1 denotes any suitable base,and 2 uprights rising therefrom, the latter being provided withcross-braces 3. .The upper and lower side bars 4 5 are pivotedintermediate their length, the former to the ends of the fixed shelf 6at 7 and the latter to depending angle-irons 8, fastened to the sides ofthe fixed shelf, thus locating the pivotal points of the side bars 5below those of the side bars 4. The pivoted shelves 9 are connected tothe side bars 4 5 above and below the fixed shelf 6 by pivoting theirfront ends directly to the side bars 4, while their rear ends carrybrackets 10, which project downward in a manner similar to theangle-irons 8 of the fixed shelf 6 and are pivoted to the side bars 5,as shown. Diagonal braces 11 may, if desired, be fixed to the side bars5 for the purpose of stiffening the structure. Each angle-iron 8 of thefixed shelf 6 has formed integral therewith a socket 12, the sameprojecting beneath said fixed shelf and open at both ends, though formedwith an annular shoulder-13 at its inner end, all as shown in Fig. 5.Removably located within and projecting somewhat beyond the outer end ofeach socket 12 is a centrally-apertured plug 14, formed, preferably, ofwood. Pivoted to the upper side bars 4 at 15 are the links 16, throughthe slots of which and through the apertured plugs 14 freely passes atransverse shaft 17, extending lengthwise completely across and beneaththe fixed shelf 6, as shown in Fig. 3. This shaft is suitably headed at18 at one end and is screw-threaded at its other end to receive athumb-nut 19, as shown. If desired, suitable washers 20 may beinterposed between the headed end'18, the thumb-nut 19, and the links16. Bolted or otherwise secured to the under side of the fixed shelf 6are the brackets 21, the same terminating in sockets 22, adapted'toengage over the upper recessed ends of the uprights 2 to afford a firmsupport to the structure.

Referring to Fig. 2, it will be noticed that the upper pivoted shelf 9is formed with its longitudinal sides convex, while the rest of theshelves, including the fixed shelf 6, are formed with one longitudinalside convex and the other side concave, as shown in Fig. 3. Thisconstruction affords a somewhatgreater area when the shelves are inthesame horizontal plane, as well as adding to the artistic appearanceof the structure in all positions.

From the above description the operation of my improved constructionwill be understood to be as follows: As described in my applicationabove referred to, the shelves may be retained in any adjusted positionby means of the shaft 17 and thumb-nut 19; but by employin g the sockets12 and plugs 14, against the latter of which the links 16 are adapted tobe jammed by the thumb-nut 19, I provide very efiectually against anyaccidental slipping of said links, such as might occur were thecontact-surfaces metal, as the latter would become highly polished bythe constant friction.

Moreover, should the contact-surfaces of preferably formed of wood, Iwish it to be understood that I contemplate the use of any othersuitable substance possessing the non-slipping propertysuch, forinstance, as semivulcanized rubber.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with a supportingframe, side bars, and shelvespivoted to said side bars, of a fixed intermediate shelf, to which saidside bars are pivoted intermediate their length, means for connectingsaid shelf to the supporting-frame, sockets fixed to the under side ofsaid shelf, apertured plugs in said sockets projecting beyond the outeredges of the same, a transverse shaft passing through said plugs andsockets, links pivoted to the side bars and engaged by said shaft, andmeans on said shaft for clamping said links in any adjusted positionagainst said plugs, substantially as set forth.

2. The combination with a supportingframe, side bars, and shelvespivoted to said side bars, of a fixed intermediate shelf, to which saidside bars are pivoted intermediate their length, means for connectingsaid shelf to the supporting-frame, sockets fixed to the under side ofsaid shelf and having annular shoulders at their inner ends, removableapertured plugs in said sockets limited in their movement thereinto bysaid annular shoulders and projecting beyond the outer edge of saidsockets, a transverse shaft passing through said plugs and sockets,links pivoted to the side bars and engaged by said shaft, and means onsaid shaft for clamping said links in any adjusted position against saidplugs, substantially as set forth.

3. The combination with a supportingframe embodying verticaluprights,sidc bars, and shelves pivoted to said side bars, of a fixedintermediate shelf to which said side bars are pivoted, a transverseshaft passing beneath the fixed shelf and connected thereto by suitablemeans and projecting between the vertical uprights of thesupporting-frame, links pivoted to the side bars and engaged by saidshaft, means on said shaft for clamping said links in any adjustedposition,and brackets attached to the fixed shelf and carrying socketsat their outer ends adapted to engage with the upper ends of saiduprights, substantially as set forth.

In testimony whereof I affix my signature in the presence of twowitnesses.

FREDERICK YUNCK Witnesses:

GEORGE H. BEACH, E. IIILLIARD.

